./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e334a37fa3ef1f2b757af8cdc97575f5cde09f8b .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-01 12:35:01,755 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 12:35:01,756 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 12:35:01,762 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 12:35:01,762 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 12:35:01,763 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 12:35:01,763 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 12:35:01,764 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 12:35:01,765 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 12:35:01,765 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 12:35:01,766 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 12:35:01,766 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 12:35:01,766 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 12:35:01,767 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 12:35:01,767 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 12:35:01,768 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 12:35:01,768 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 12:35:01,769 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 12:35:01,770 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 12:35:01,770 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 12:35:01,771 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 12:35:01,772 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 12:35:01,773 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 12:35:01,773 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 12:35:01,773 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 12:35:01,773 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 12:35:01,774 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 12:35:01,774 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 12:35:01,774 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 12:35:01,775 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 12:35:01,775 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 12:35:01,775 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 12:35:01,775 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 12:35:01,776 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 12:35:01,776 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 12:35:01,776 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 12:35:01,776 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-12-01 12:35:01,784 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 12:35:01,784 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 12:35:01,785 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 12:35:01,785 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 12:35:01,785 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 12:35:01,785 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-01 12:35:01,785 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-01 12:35:01,785 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-01 12:35:01,786 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-01 12:35:01,786 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-01 12:35:01,786 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-01 12:35:01,786 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 12:35:01,786 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-01 12:35:01,786 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 12:35:01,786 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 12:35:01,786 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-01 12:35:01,786 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-01 12:35:01,786 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-01 12:35:01,786 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 12:35:01,786 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-01 12:35:01,787 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 12:35:01,787 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-01 12:35:01,787 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 12:35:01,787 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 12:35:01,787 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-01 12:35:01,787 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 12:35:01,787 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-01 12:35:01,787 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-01 12:35:01,788 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-01 12:35:01,788 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e334a37fa3ef1f2b757af8cdc97575f5cde09f8b [2018-12-01 12:35:01,804 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 12:35:01,811 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 12:35:01,813 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 12:35:01,814 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 12:35:01,814 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 12:35:01,814 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c [2018-12-01 12:35:01,849 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/data/99a4d33fa/ca4156b997f048f083cab8287e60b6b0/FLAG40ed24515 [2018-12-01 12:35:02,277 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 12:35:02,277 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c [2018-12-01 12:35:02,281 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/data/99a4d33fa/ca4156b997f048f083cab8287e60b6b0/FLAG40ed24515 [2018-12-01 12:35:02,289 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/data/99a4d33fa/ca4156b997f048f083cab8287e60b6b0 [2018-12-01 12:35:02,290 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 12:35:02,291 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 12:35:02,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 12:35:02,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 12:35:02,294 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 12:35:02,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 12:35:02" (1/1) ... [2018-12-01 12:35:02,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16b4367c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 12:35:02, skipping insertion in model container [2018-12-01 12:35:02,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 12:35:02" (1/1) ... [2018-12-01 12:35:02,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 12:35:02,308 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 12:35:02,387 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 12:35:02,389 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 12:35:02,398 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 12:35:02,405 INFO L195 MainTranslator]: Completed translation [2018-12-01 12:35:02,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 12:35:02 WrapperNode [2018-12-01 12:35:02,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 12:35:02,406 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 12:35:02,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 12:35:02,406 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 12:35:02,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 12:35:02" (1/1) ... [2018-12-01 12:35:02,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 12:35:02" (1/1) ... [2018-12-01 12:35:02,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 12:35:02,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 12:35:02,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 12:35:02,424 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 12:35:02,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 12:35:02" (1/1) ... [2018-12-01 12:35:02,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 12:35:02" (1/1) ... [2018-12-01 12:35:02,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 12:35:02" (1/1) ... [2018-12-01 12:35:02,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 12:35:02" (1/1) ... [2018-12-01 12:35:02,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 12:35:02" (1/1) ... [2018-12-01 12:35:02,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 12:35:02" (1/1) ... [2018-12-01 12:35:02,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 12:35:02" (1/1) ... [2018-12-01 12:35:02,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 12:35:02,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 12:35:02,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 12:35:02,435 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 12:35:02,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 12:35:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 12:35:02,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 12:35:02,578 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 12:35:02,578 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-01 12:35:02,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 12:35:02 BoogieIcfgContainer [2018-12-01 12:35:02,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 12:35:02,579 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-01 12:35:02,579 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-01 12:35:02,581 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-01 12:35:02,582 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-01 12:35:02,582 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.12 12:35:02" (1/3) ... [2018-12-01 12:35:02,583 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@63cbfd89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 12:35:02, skipping insertion in model container [2018-12-01 12:35:02,583 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-01 12:35:02,583 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 12:35:02" (2/3) ... [2018-12-01 12:35:02,584 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@63cbfd89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 12:35:02, skipping insertion in model container [2018-12-01 12:35:02,584 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-01 12:35:02,584 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 12:35:02" (3/3) ... [2018-12-01 12:35:02,585 INFO L375 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c [2018-12-01 12:35:02,624 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 12:35:02,624 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-01 12:35:02,624 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-01 12:35:02,625 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-01 12:35:02,625 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 12:35:02,625 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 12:35:02,625 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-01 12:35:02,625 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 12:35:02,625 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-01 12:35:02,633 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-12-01 12:35:02,646 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-01 12:35:02,646 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 12:35:02,646 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 12:35:02,650 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-01 12:35:02,650 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-01 12:35:02,650 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-01 12:35:02,650 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-12-01 12:35:02,651 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-01 12:35:02,651 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 12:35:02,651 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 12:35:02,651 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-01 12:35:02,651 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-01 12:35:02,656 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 5#L18-2true [2018-12-01 12:35:02,656 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 11#L19true assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 7#L19-2true main_~y~0 := main_~y~0 - 1; 5#L18-2true [2018-12-01 12:35:02,660 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:02,660 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-12-01 12:35:02,661 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:35:02,662 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:35:02,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:02,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 12:35:02,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:02,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:02,722 INFO L82 PathProgramCache]: Analyzing trace with hash 40299, now seen corresponding path program 1 times [2018-12-01 12:35:02,722 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:35:02,722 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:35:02,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:02,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 12:35:02,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:02,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:02,730 INFO L82 PathProgramCache]: Analyzing trace with hash 963820, now seen corresponding path program 1 times [2018-12-01 12:35:02,730 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:35:02,730 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:35:02,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:02,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 12:35:02,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:02,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:02,769 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 12:35:02,770 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 12:35:02,770 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 12:35:02,770 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 12:35:02,770 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 12:35:02,771 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:02,771 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 12:35:02,771 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 12:35:02,771 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration1_Loop [2018-12-01 12:35:02,771 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 12:35:02,771 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 12:35:02,785 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:02,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:02,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:02,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:02,798 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:02,842 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 12:35:02,843 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:02,846 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:35:02,846 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:35:02,865 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 12:35:02,865 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:02,868 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:35:02,868 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:35:02,884 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 12:35:02,884 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:02,887 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:35:02,887 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:35:02,901 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 12:35:02,901 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:02,904 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:35:02,904 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:35:02,906 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 12:35:02,906 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:02,922 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:35:02,922 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:02,939 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 12:35:02,939 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:35:02,956 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 12:35:02,957 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 12:35:02,957 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 12:35:02,957 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 12:35:02,957 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 12:35:02,957 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 12:35:02,957 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:02,957 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 12:35:02,957 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 12:35:02,958 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration1_Loop [2018-12-01 12:35:02,958 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 12:35:02,958 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 12:35:02,959 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:02,961 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:02,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:02,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:02,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:03,010 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 12:35:03,013 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 12:35:03,014 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 12:35:03,015 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 12:35:03,015 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 12:35:03,015 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 12:35:03,016 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 12:35:03,018 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 12:35:03,018 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 12:35:03,024 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 12:35:03,024 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 12:35:03,025 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 12:35:03,025 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 12:35:03,025 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 12:35:03,025 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 12:35:03,026 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 12:35:03,026 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 12:35:03,033 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 12:35:03,033 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 12:35:03,034 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 12:35:03,034 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 12:35:03,034 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 12:35:03,034 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 12:35:03,034 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 12:35:03,035 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 12:35:03,035 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 12:35:03,036 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 12:35:03,036 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 12:35:03,037 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 12:35:03,037 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 12:35:03,037 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 12:35:03,037 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 12:35:03,037 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 12:35:03,038 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 12:35:03,038 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 12:35:03,039 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 12:35:03,039 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 12:35:03,039 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 12:35:03,040 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 12:35:03,040 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 12:35:03,040 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 12:35:03,040 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 12:35:03,040 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 12:35:03,040 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 12:35:03,043 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 12:35:03,046 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 12:35:03,046 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-01 12:35:03,047 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 12:35:03,047 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 12:35:03,047 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 12:35:03,047 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2018-12-01 12:35:03,048 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 12:35:03,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:35:03,074 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:35:03,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:35:03,082 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:35:03,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 12:35:03,102 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-01 12:35:03,103 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 3 states. [2018-12-01 12:35:03,135 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 3 states. Result 37 states and 54 transitions. Complement of second has 8 states. [2018-12-01 12:35:03,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-01 12:35:03,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-01 12:35:03,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 26 transitions. [2018-12-01 12:35:03,138 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 1 letters. Loop has 3 letters. [2018-12-01 12:35:03,139 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:35:03,139 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 4 letters. Loop has 3 letters. [2018-12-01 12:35:03,139 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:35:03,139 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 1 letters. Loop has 6 letters. [2018-12-01 12:35:03,139 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:35:03,140 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 54 transitions. [2018-12-01 12:35:03,142 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-01 12:35:03,144 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 14 states and 20 transitions. [2018-12-01 12:35:03,145 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-12-01 12:35:03,145 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2018-12-01 12:35:03,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2018-12-01 12:35:03,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 12:35:03,145 INFO L705 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2018-12-01 12:35:03,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2018-12-01 12:35:03,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-12-01 12:35:03,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-01 12:35:03,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2018-12-01 12:35:03,161 INFO L728 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2018-12-01 12:35:03,161 INFO L608 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2018-12-01 12:35:03,161 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-01 12:35:03,161 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2018-12-01 12:35:03,161 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-01 12:35:03,161 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 12:35:03,161 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 12:35:03,162 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-12-01 12:35:03,162 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-12-01 12:35:03,162 INFO L794 eck$LassoCheckResult]: Stem: 92#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 93#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 91#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 98#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 99#L20-2 [2018-12-01 12:35:03,162 INFO L796 eck$LassoCheckResult]: Loop: 99#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 99#L20-2 [2018-12-01 12:35:03,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:03,162 INFO L82 PathProgramCache]: Analyzing trace with hash 963347, now seen corresponding path program 1 times [2018-12-01 12:35:03,162 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:35:03,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:35:03,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:03,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 12:35:03,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:03,169 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:03,169 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2018-12-01 12:35:03,169 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:35:03,169 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:35:03,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:03,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 12:35:03,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:03,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:03,172 INFO L82 PathProgramCache]: Analyzing trace with hash 29863779, now seen corresponding path program 2 times [2018-12-01 12:35:03,172 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:35:03,173 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:35:03,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:03,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 12:35:03,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:03,203 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 12:35:03,203 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 12:35:03,203 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 12:35:03,203 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 12:35:03,203 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 12:35:03,203 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:03,203 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 12:35:03,203 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 12:35:03,203 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-01 12:35:03,203 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 12:35:03,204 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 12:35:03,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:03,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:03,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:03,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:03,233 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 12:35:03,233 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:03,234 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:35:03,234 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:35:03,249 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 12:35:03,249 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:03,251 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:35:03,251 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:35:03,266 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 12:35:03,266 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:03,269 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:35:03,269 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:35:03,271 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 12:35:03,271 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:03,286 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:35:03,286 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:03,303 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 12:35:03,303 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:35:03,406 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 12:35:03,407 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 12:35:03,408 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 12:35:03,408 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 12:35:03,408 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 12:35:03,408 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 12:35:03,408 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:03,408 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 12:35:03,408 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 12:35:03,408 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-01 12:35:03,408 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 12:35:03,408 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 12:35:03,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:03,411 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:03,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:03,415 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:03,447 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 12:35:03,447 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 12:35:03,448 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 12:35:03,448 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 12:35:03,448 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 12:35:03,448 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 12:35:03,448 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 12:35:03,449 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 12:35:03,449 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 12:35:03,452 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 12:35:03,452 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 12:35:03,452 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 12:35:03,452 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 12:35:03,453 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 12:35:03,453 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 12:35:03,453 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 12:35:03,454 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 12:35:03,456 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 12:35:03,457 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 12:35:03,457 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 12:35:03,457 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 12:35:03,457 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 12:35:03,457 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-12-01 12:35:03,457 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 12:35:03,458 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-12-01 12:35:03,458 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 12:35:03,460 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 12:35:03,460 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 12:35:03,461 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 12:35:03,461 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 12:35:03,461 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 12:35:03,461 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 12:35:03,461 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 12:35:03,461 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 12:35:03,461 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 12:35:03,464 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 12:35:03,466 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 12:35:03,466 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-01 12:35:03,466 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 12:35:03,466 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 12:35:03,466 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 12:35:03,466 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~m~0 - 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2018-12-01 12:35:03,467 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 12:35:03,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:35:03,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:35:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:35:03,484 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:35:03,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 12:35:03,484 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-01 12:35:03,484 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8 Second operand 2 states. [2018-12-01 12:35:03,492 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8. Second operand 2 states. Result 25 states and 39 transitions. Complement of second has 6 states. [2018-12-01 12:35:03,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-01 12:35:03,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-12-01 12:35:03,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2018-12-01 12:35:03,493 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 4 letters. Loop has 1 letters. [2018-12-01 12:35:03,493 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:35:03,493 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 5 letters. Loop has 1 letters. [2018-12-01 12:35:03,493 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:35:03,493 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 4 letters. Loop has 2 letters. [2018-12-01 12:35:03,493 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:35:03,493 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 39 transitions. [2018-12-01 12:35:03,494 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-01 12:35:03,495 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 18 states and 26 transitions. [2018-12-01 12:35:03,495 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-12-01 12:35:03,495 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-12-01 12:35:03,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 26 transitions. [2018-12-01 12:35:03,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 12:35:03,495 INFO L705 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2018-12-01 12:35:03,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 26 transitions. [2018-12-01 12:35:03,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2018-12-01 12:35:03,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-12-01 12:35:03,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 24 transitions. [2018-12-01 12:35:03,496 INFO L728 BuchiCegarLoop]: Abstraction has 16 states and 24 transitions. [2018-12-01 12:35:03,496 INFO L608 BuchiCegarLoop]: Abstraction has 16 states and 24 transitions. [2018-12-01 12:35:03,496 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-01 12:35:03,496 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 24 transitions. [2018-12-01 12:35:03,497 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-01 12:35:03,497 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 12:35:03,497 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 12:35:03,498 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-12-01 12:35:03,498 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-12-01 12:35:03,498 INFO L794 eck$LassoCheckResult]: Stem: 162#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 163#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 168#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 177#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 176#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 169#L20-3 [2018-12-01 12:35:03,498 INFO L796 eck$LassoCheckResult]: Loop: 169#L20-3 main_~x~0 := main_~x~0 - 1; 170#L19-2 main_~y~0 := main_~y~0 - 1; 164#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 165#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 173#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 169#L20-3 [2018-12-01 12:35:03,498 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:03,499 INFO L82 PathProgramCache]: Analyzing trace with hash 29863777, now seen corresponding path program 1 times [2018-12-01 12:35:03,499 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:35:03,499 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:35:03,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:03,499 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 12:35:03,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:03,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:03,504 INFO L82 PathProgramCache]: Analyzing trace with hash 53544460, now seen corresponding path program 1 times [2018-12-01 12:35:03,505 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:35:03,505 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:35:03,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:03,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 12:35:03,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:03,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:03,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1236267692, now seen corresponding path program 1 times [2018-12-01 12:35:03,509 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:35:03,509 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:35:03,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:03,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 12:35:03,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:03,537 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 12:35:03,538 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 12:35:03,538 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 12:35:03,538 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 12:35:03,538 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 12:35:03,538 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:03,538 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 12:35:03,538 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 12:35:03,538 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-01 12:35:03,538 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 12:35:03,538 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 12:35:03,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:03,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:03,548 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:03,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:03,564 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:03,620 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 12:35:03,621 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:03,624 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:35:03,625 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:03,641 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 12:35:03,641 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:35:03,722 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 12:35:03,723 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 12:35:03,723 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 12:35:03,723 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 12:35:03,723 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 12:35:03,724 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 12:35:03,724 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:03,724 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 12:35:03,724 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 12:35:03,724 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-01 12:35:03,724 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 12:35:03,724 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 12:35:03,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:03,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:03,735 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:03,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:03,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:03,784 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 12:35:03,784 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 12:35:03,785 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 12:35:03,785 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 12:35:03,785 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 12:35:03,786 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 12:35:03,786 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-12-01 12:35:03,786 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 12:35:03,787 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-12-01 12:35:03,787 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 12:35:03,792 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 12:35:03,795 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 12:35:03,795 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-01 12:35:03,795 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 12:35:03,795 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 12:35:03,796 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 12:35:03,796 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-12-01 12:35:03,796 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 12:35:03,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:35:03,813 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:35:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:35:03,816 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:35:03,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 12:35:03,844 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-01 12:35:03,844 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 24 transitions. cyclomatic complexity: 11 Second operand 5 states. [2018-12-01 12:35:03,859 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 24 transitions. cyclomatic complexity: 11. Second operand 5 states. Result 46 states and 68 transitions. Complement of second has 8 states. [2018-12-01 12:35:03,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-01 12:35:03,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-12-01 12:35:03,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2018-12-01 12:35:03,860 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 5 letters. Loop has 5 letters. [2018-12-01 12:35:03,860 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:35:03,860 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 10 letters. Loop has 5 letters. [2018-12-01 12:35:03,860 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:35:03,860 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 5 letters. Loop has 10 letters. [2018-12-01 12:35:03,861 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:35:03,861 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 68 transitions. [2018-12-01 12:35:03,862 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-01 12:35:03,862 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 32 states and 46 transitions. [2018-12-01 12:35:03,862 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-12-01 12:35:03,862 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2018-12-01 12:35:03,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 46 transitions. [2018-12-01 12:35:03,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 12:35:03,863 INFO L705 BuchiCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-12-01 12:35:03,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 46 transitions. [2018-12-01 12:35:03,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2018-12-01 12:35:03,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-01 12:35:03,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2018-12-01 12:35:03,865 INFO L728 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2018-12-01 12:35:03,865 INFO L608 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2018-12-01 12:35:03,865 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-01 12:35:03,865 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 44 transitions. [2018-12-01 12:35:03,866 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-01 12:35:03,866 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 12:35:03,866 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 12:35:03,866 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1] [2018-12-01 12:35:03,866 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-12-01 12:35:03,866 INFO L794 eck$LassoCheckResult]: Stem: 285#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 280#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 281#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 295#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 288#L20-3 main_~x~0 := main_~x~0 - 1; 289#L19-2 main_~y~0 := main_~y~0 - 1; 292#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 305#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 304#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 302#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 298#L20-3 [2018-12-01 12:35:03,866 INFO L796 eck$LassoCheckResult]: Loop: 298#L20-3 main_~x~0 := main_~x~0 - 1; 290#L19-2 main_~y~0 := main_~y~0 - 1; 291#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 299#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 294#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 298#L20-3 [2018-12-01 12:35:03,867 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:03,867 INFO L82 PathProgramCache]: Analyzing trace with hash -363863338, now seen corresponding path program 2 times [2018-12-01 12:35:03,867 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:35:03,867 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:35:03,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:03,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 12:35:03,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:35:03,892 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-01 12:35:03,893 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 12:35:03,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-01 12:35:03,895 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-01 12:35:03,895 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:03,895 INFO L82 PathProgramCache]: Analyzing trace with hash 53544460, now seen corresponding path program 2 times [2018-12-01 12:35:03,895 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:35:03,895 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:35:03,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:03,896 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 12:35:03,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:03,916 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 12:35:03,916 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 12:35:03,916 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 12:35:03,917 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 12:35:03,917 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 12:35:03,917 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:03,917 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 12:35:03,917 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 12:35:03,917 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration4_Loop [2018-12-01 12:35:03,917 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 12:35:03,917 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 12:35:03,918 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:03,920 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:03,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:03,933 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:03,935 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:03,994 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 12:35:03,994 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:03,996 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:35:03,996 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:35:03,999 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 12:35:03,999 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=7} Honda state: {ULTIMATE.start_main_#t~nondet1=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:04,013 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:35:04,014 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:04,029 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 12:35:04,029 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:35:04,060 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 12:35:04,061 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 12:35:04,061 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 12:35:04,061 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 12:35:04,061 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 12:35:04,061 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 12:35:04,061 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:04,061 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 12:35:04,061 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 12:35:04,061 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration4_Loop [2018-12-01 12:35:04,061 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 12:35:04,061 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 12:35:04,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,064 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,067 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,068 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,121 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 12:35:04,121 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 12:35:04,121 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 12:35:04,122 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 12:35:04,122 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 12:35:04,122 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 12:35:04,122 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-12-01 12:35:04,122 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 12:35:04,122 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-12-01 12:35:04,122 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 12:35:04,124 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 12:35:04,124 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 12:35:04,125 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 12:35:04,125 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 12:35:04,125 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 12:35:04,125 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 12:35:04,125 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 12:35:04,126 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 12:35:04,126 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 12:35:04,127 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 12:35:04,129 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 12:35:04,129 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-01 12:35:04,129 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 12:35:04,129 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 12:35:04,129 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 12:35:04,130 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-12-01 12:35:04,130 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 12:35:04,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:35:04,140 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:35:04,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:35:04,143 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:35:04,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 12:35:04,154 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-01 12:35:04,154 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 44 transitions. cyclomatic complexity: 20 Second operand 4 states. [2018-12-01 12:35:04,167 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 30 states and 44 transitions. cyclomatic complexity: 20. Second operand 4 states. Result 80 states and 118 transitions. Complement of second has 7 states. [2018-12-01 12:35:04,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-01 12:35:04,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-01 12:35:04,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 28 transitions. [2018-12-01 12:35:04,168 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 10 letters. Loop has 5 letters. [2018-12-01 12:35:04,168 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:35:04,168 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 15 letters. Loop has 5 letters. [2018-12-01 12:35:04,168 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:35:04,169 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 10 letters. Loop has 10 letters. [2018-12-01 12:35:04,169 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:35:04,169 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 80 states and 118 transitions. [2018-12-01 12:35:04,171 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2018-12-01 12:35:04,171 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 80 states to 54 states and 78 transitions. [2018-12-01 12:35:04,172 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-12-01 12:35:04,172 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2018-12-01 12:35:04,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 78 transitions. [2018-12-01 12:35:04,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 12:35:04,172 INFO L705 BuchiCegarLoop]: Abstraction has 54 states and 78 transitions. [2018-12-01 12:35:04,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states and 78 transitions. [2018-12-01 12:35:04,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 40. [2018-12-01 12:35:04,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-01 12:35:04,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 60 transitions. [2018-12-01 12:35:04,175 INFO L728 BuchiCegarLoop]: Abstraction has 40 states and 60 transitions. [2018-12-01 12:35:04,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-01 12:35:04,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-01 12:35:04,177 INFO L87 Difference]: Start difference. First operand 40 states and 60 transitions. Second operand 4 states. [2018-12-01 12:35:04,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 12:35:04,189 INFO L93 Difference]: Finished difference Result 38 states and 53 transitions. [2018-12-01 12:35:04,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 12:35:04,189 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 53 transitions. [2018-12-01 12:35:04,190 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2018-12-01 12:35:04,190 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 31 states and 46 transitions. [2018-12-01 12:35:04,190 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-12-01 12:35:04,190 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-12-01 12:35:04,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 46 transitions. [2018-12-01 12:35:04,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 12:35:04,191 INFO L705 BuchiCegarLoop]: Abstraction has 31 states and 46 transitions. [2018-12-01 12:35:04,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 46 transitions. [2018-12-01 12:35:04,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-12-01 12:35:04,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-12-01 12:35:04,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 46 transitions. [2018-12-01 12:35:04,192 INFO L728 BuchiCegarLoop]: Abstraction has 31 states and 46 transitions. [2018-12-01 12:35:04,192 INFO L608 BuchiCegarLoop]: Abstraction has 31 states and 46 transitions. [2018-12-01 12:35:04,192 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-12-01 12:35:04,192 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 46 transitions. [2018-12-01 12:35:04,192 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2018-12-01 12:35:04,193 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 12:35:04,193 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 12:35:04,193 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2018-12-01 12:35:04,193 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-12-01 12:35:04,193 INFO L794 eck$LassoCheckResult]: Stem: 542#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 538#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 539#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 551#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 559#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 546#L20-3 main_~x~0 := main_~x~0 - 1; 547#L19-2 main_~y~0 := main_~y~0 - 1; 567#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 565#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 549#L20-2 [2018-12-01 12:35:04,193 INFO L796 eck$LassoCheckResult]: Loop: 549#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 549#L20-2 [2018-12-01 12:35:04,193 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:04,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1840994920, now seen corresponding path program 3 times [2018-12-01 12:35:04,193 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:35:04,193 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:35:04,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:04,194 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 12:35:04,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:04,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:04,199 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 2 times [2018-12-01 12:35:04,200 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:35:04,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:35:04,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:04,200 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 12:35:04,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:04,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:04,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1236267694, now seen corresponding path program 4 times [2018-12-01 12:35:04,202 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:35:04,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:35:04,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:04,203 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 12:35:04,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:04,220 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 12:35:04,220 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 12:35:04,220 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 12:35:04,220 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 12:35:04,220 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 12:35:04,220 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:04,220 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 12:35:04,220 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 12:35:04,220 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration5_Loop [2018-12-01 12:35:04,220 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 12:35:04,220 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 12:35:04,221 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,224 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,228 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,252 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 12:35:04,252 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:04,253 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:35:04,253 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:04,269 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 12:35:04,270 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:35:04,364 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 12:35:04,365 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 12:35:04,365 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 12:35:04,365 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 12:35:04,365 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 12:35:04,365 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 12:35:04,365 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:04,365 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 12:35:04,365 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 12:35:04,366 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration5_Loop [2018-12-01 12:35:04,366 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 12:35:04,366 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 12:35:04,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,399 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 12:35:04,399 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 12:35:04,399 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 12:35:04,399 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 12:35:04,399 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 12:35:04,400 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 12:35:04,400 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 12:35:04,400 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 12:35:04,400 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 12:35:04,400 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 12:35:04,402 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 12:35:04,403 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 12:35:04,403 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-01 12:35:04,403 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 12:35:04,403 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 12:35:04,403 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 12:35:04,403 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~m~0 - 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2018-12-01 12:35:04,404 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 12:35:04,414 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:35:04,417 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:35:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:35:04,419 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:35:04,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 12:35:04,420 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-01 12:35:04,420 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21 Second operand 2 states. [2018-12-01 12:35:04,425 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21. Second operand 2 states. Result 34 states and 50 transitions. Complement of second has 5 states. [2018-12-01 12:35:04,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-01 12:35:04,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-12-01 12:35:04,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-12-01 12:35:04,426 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 9 letters. Loop has 1 letters. [2018-12-01 12:35:04,426 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:35:04,426 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-01 12:35:04,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:35:04,440 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:35:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:35:04,442 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:35:04,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 12:35:04,442 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-01 12:35:04,442 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21 Second operand 2 states. [2018-12-01 12:35:04,446 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21. Second operand 2 states. Result 34 states and 50 transitions. Complement of second has 5 states. [2018-12-01 12:35:04,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-01 12:35:04,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-12-01 12:35:04,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-12-01 12:35:04,447 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 9 letters. Loop has 1 letters. [2018-12-01 12:35:04,447 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:35:04,447 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-01 12:35:04,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:35:04,458 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:35:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:35:04,461 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:35:04,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 12:35:04,461 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-01 12:35:04,461 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21 Second operand 2 states. [2018-12-01 12:35:04,467 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21. Second operand 2 states. Result 38 states and 54 transitions. Complement of second has 4 states. [2018-12-01 12:35:04,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-01 12:35:04,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-12-01 12:35:04,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2018-12-01 12:35:04,467 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 9 letters. Loop has 1 letters. [2018-12-01 12:35:04,467 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:35:04,468 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 1 letters. [2018-12-01 12:35:04,468 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:35:04,468 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 9 letters. Loop has 2 letters. [2018-12-01 12:35:04,468 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:35:04,468 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 54 transitions. [2018-12-01 12:35:04,468 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-01 12:35:04,469 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 27 states and 37 transitions. [2018-12-01 12:35:04,469 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-12-01 12:35:04,469 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-12-01 12:35:04,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 37 transitions. [2018-12-01 12:35:04,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 12:35:04,469 INFO L705 BuchiCegarLoop]: Abstraction has 27 states and 37 transitions. [2018-12-01 12:35:04,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 37 transitions. [2018-12-01 12:35:04,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2018-12-01 12:35:04,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-12-01 12:35:04,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2018-12-01 12:35:04,470 INFO L728 BuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2018-12-01 12:35:04,470 INFO L608 BuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2018-12-01 12:35:04,470 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-12-01 12:35:04,470 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 29 transitions. [2018-12-01 12:35:04,471 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-01 12:35:04,471 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 12:35:04,471 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 12:35:04,471 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1] [2018-12-01 12:35:04,471 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-01 12:35:04,471 INFO L794 eck$LassoCheckResult]: Stem: 798#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 799#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 806#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 803#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 804#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 802#L20-3 main_~x~0 := main_~x~0 - 1; 801#L19-2 main_~y~0 := main_~y~0 - 1; 796#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 797#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 807#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 810#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 813#L20-3 main_~x~0 := main_~x~0 - 1; 812#L19-2 main_~y~0 := main_~y~0 - 1; 811#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 808#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 800#L19-2 [2018-12-01 12:35:04,472 INFO L796 eck$LassoCheckResult]: Loop: 800#L19-2 main_~y~0 := main_~y~0 - 1; 794#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 795#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 800#L19-2 [2018-12-01 12:35:04,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:04,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1970756676, now seen corresponding path program 1 times [2018-12-01 12:35:04,472 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:35:04,472 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:35:04,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:04,472 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 12:35:04,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:04,479 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:04,479 INFO L82 PathProgramCache]: Analyzing trace with hash 58959, now seen corresponding path program 2 times [2018-12-01 12:35:04,479 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:35:04,479 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:35:04,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:04,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 12:35:04,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:04,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:04,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1390830772, now seen corresponding path program 2 times [2018-12-01 12:35:04,483 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:35:04,483 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:35:04,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:04,483 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 12:35:04,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:35:04,502 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-12-01 12:35:04,502 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 12:35:04,502 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 12:35:04,508 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 12:35:04,514 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 12:35:04,514 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 12:35:04,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:35:04,518 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-12-01 12:35:04,533 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 12:35:04,533 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-12-01 12:35:04,548 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 12:35:04,548 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 12:35:04,548 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 12:35:04,548 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 12:35:04,548 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 12:35:04,548 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:04,548 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 12:35:04,548 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 12:35:04,548 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration6_Loop [2018-12-01 12:35:04,549 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 12:35:04,549 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 12:35:04,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,551 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,553 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,582 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 12:35:04,582 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:04,584 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:35:04,584 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:35:04,598 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 12:35:04,598 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:04,601 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:35:04,601 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:35:04,616 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 12:35:04,616 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:04,618 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:35:04,619 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:35:04,621 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 12:35:04,621 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:04,636 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:35:04,636 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:04,652 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 12:35:04,652 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:35:04,681 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 12:35:04,682 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 12:35:04,682 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 12:35:04,682 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 12:35:04,683 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 12:35:04,683 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 12:35:04,683 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:04,683 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 12:35:04,683 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 12:35:04,683 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration6_Loop [2018-12-01 12:35:04,683 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 12:35:04,683 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 12:35:04,684 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,692 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,719 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 12:35:04,719 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 12:35:04,719 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 12:35:04,719 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 12:35:04,720 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 12:35:04,720 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 12:35:04,720 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 12:35:04,720 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 12:35:04,720 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 12:35:04,722 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 12:35:04,722 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 12:35:04,722 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 12:35:04,723 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 12:35:04,723 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 12:35:04,723 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 12:35:04,723 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 12:35:04,723 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 12:35:04,723 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 12:35:04,723 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 12:35:04,724 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 12:35:04,724 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 12:35:04,724 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 12:35:04,724 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 12:35:04,724 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 12:35:04,724 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 12:35:04,724 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 12:35:04,725 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 12:35:04,726 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 12:35:04,727 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 12:35:04,727 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-01 12:35:04,728 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 12:35:04,728 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 12:35:04,728 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 12:35:04,728 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-12-01 12:35:04,728 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 12:35:04,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:35:04,747 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:35:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:35:04,750 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:35:04,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 12:35:04,758 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-01 12:35:04,758 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 11 Second operand 4 states. [2018-12-01 12:35:04,768 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 63 states and 85 transitions. Complement of second has 7 states. [2018-12-01 12:35:04,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-01 12:35:04,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-01 12:35:04,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-12-01 12:35:04,769 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 3 letters. [2018-12-01 12:35:04,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:35:04,769 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 18 letters. Loop has 3 letters. [2018-12-01 12:35:04,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:35:04,769 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 6 letters. [2018-12-01 12:35:04,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:35:04,769 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 85 transitions. [2018-12-01 12:35:04,770 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-01 12:35:04,770 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 44 states and 59 transitions. [2018-12-01 12:35:04,770 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-12-01 12:35:04,770 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-12-01 12:35:04,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 59 transitions. [2018-12-01 12:35:04,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 12:35:04,771 INFO L705 BuchiCegarLoop]: Abstraction has 44 states and 59 transitions. [2018-12-01 12:35:04,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 59 transitions. [2018-12-01 12:35:04,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 33. [2018-12-01 12:35:04,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-01 12:35:04,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2018-12-01 12:35:04,772 INFO L728 BuchiCegarLoop]: Abstraction has 33 states and 44 transitions. [2018-12-01 12:35:04,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-01 12:35:04,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-01 12:35:04,772 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand 5 states. [2018-12-01 12:35:04,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 12:35:04,783 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2018-12-01 12:35:04,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-01 12:35:04,783 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 68 transitions. [2018-12-01 12:35:04,784 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-01 12:35:04,784 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 45 states and 58 transitions. [2018-12-01 12:35:04,784 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-12-01 12:35:04,784 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-12-01 12:35:04,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 58 transitions. [2018-12-01 12:35:04,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 12:35:04,784 INFO L705 BuchiCegarLoop]: Abstraction has 45 states and 58 transitions. [2018-12-01 12:35:04,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 58 transitions. [2018-12-01 12:35:04,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2018-12-01 12:35:04,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-01 12:35:04,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2018-12-01 12:35:04,786 INFO L728 BuchiCegarLoop]: Abstraction has 40 states and 53 transitions. [2018-12-01 12:35:04,786 INFO L608 BuchiCegarLoop]: Abstraction has 40 states and 53 transitions. [2018-12-01 12:35:04,786 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-12-01 12:35:04,786 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 53 transitions. [2018-12-01 12:35:04,786 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-01 12:35:04,786 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 12:35:04,786 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 12:35:04,786 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 2, 2, 2, 1] [2018-12-01 12:35:04,787 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-01 12:35:04,787 INFO L794 eck$LassoCheckResult]: Stem: 1103#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 1104#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1112#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1108#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1109#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1133#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1107#L20-3 main_~x~0 := main_~x~0 - 1; 1106#L19-2 main_~y~0 := main_~y~0 - 1; 1101#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1102#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1124#L19-2 main_~y~0 := main_~y~0 - 1; 1127#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1123#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1121#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1117#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1120#L20-3 main_~x~0 := main_~x~0 - 1; 1119#L19-2 main_~y~0 := main_~y~0 - 1; 1118#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1115#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1105#L19-2 [2018-12-01 12:35:04,787 INFO L796 eck$LassoCheckResult]: Loop: 1105#L19-2 main_~y~0 := main_~y~0 - 1; 1099#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1100#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1105#L19-2 [2018-12-01 12:35:04,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:04,787 INFO L82 PathProgramCache]: Analyzing trace with hash 715204654, now seen corresponding path program 3 times [2018-12-01 12:35:04,787 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:35:04,787 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:35:04,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:04,788 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 12:35:04,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:04,795 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:04,795 INFO L82 PathProgramCache]: Analyzing trace with hash 58959, now seen corresponding path program 3 times [2018-12-01 12:35:04,795 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:35:04,795 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:35:04,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:04,795 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 12:35:04,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:04,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:04,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:04,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:04,797 INFO L82 PathProgramCache]: Analyzing trace with hash -670878974, now seen corresponding path program 4 times [2018-12-01 12:35:04,797 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:35:04,797 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:35:04,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:04,798 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 12:35:04,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:35:04,822 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-12-01 12:35:04,823 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 12:35:04,823 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 12:35:04,829 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-01 12:35:04,833 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-01 12:35:04,833 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 12:35:04,834 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:35:04,838 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-12-01 12:35:04,853 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 12:35:04,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-12-01 12:35:04,863 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 12:35:04,863 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 12:35:04,863 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 12:35:04,863 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 12:35:04,863 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 12:35:04,863 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:04,863 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 12:35:04,863 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 12:35:04,863 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration7_Loop [2018-12-01 12:35:04,863 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 12:35:04,864 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 12:35:04,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,868 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,869 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,871 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,901 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 12:35:04,901 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:04,902 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:35:04,902 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:35:04,917 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 12:35:04,917 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:04,919 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:35:04,919 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:04,935 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 12:35:04,935 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:35:04,964 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 12:35:04,965 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 12:35:04,965 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 12:35:04,966 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 12:35:04,966 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 12:35:04,966 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 12:35:04,966 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:04,966 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 12:35:04,966 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 12:35:04,966 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration7_Loop [2018-12-01 12:35:04,966 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 12:35:04,966 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 12:35:04,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,973 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:04,999 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 12:35:04,999 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 12:35:04,999 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 12:35:04,999 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 12:35:05,000 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 12:35:05,000 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 12:35:05,000 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 12:35:05,000 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 12:35:05,000 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 12:35:05,000 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 12:35:05,001 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 12:35:05,001 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 12:35:05,002 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-01 12:35:05,002 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 12:35:05,002 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 12:35:05,002 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 12:35:05,002 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-12-01 12:35:05,002 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 12:35:05,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:35:05,014 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:35:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:35:05,016 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:35:05,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 12:35:05,024 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-01 12:35:05,024 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20 Second operand 4 states. [2018-12-01 12:35:05,035 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20. Second operand 4 states. Result 46 states and 61 transitions. Complement of second has 7 states. [2018-12-01 12:35:05,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-01 12:35:05,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-01 12:35:05,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-12-01 12:35:05,036 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 19 letters. Loop has 3 letters. [2018-12-01 12:35:05,036 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:35:05,036 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-01 12:35:05,045 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:35:05,050 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:35:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:35:05,053 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:35:05,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 12:35:05,061 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-01 12:35:05,061 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20 Second operand 4 states. [2018-12-01 12:35:05,086 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20. Second operand 4 states. Result 74 states and 97 transitions. Complement of second has 9 states. [2018-12-01 12:35:05,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-12-01 12:35:05,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-01 12:35:05,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2018-12-01 12:35:05,087 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 19 letters. Loop has 3 letters. [2018-12-01 12:35:05,087 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:35:05,087 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 22 letters. Loop has 3 letters. [2018-12-01 12:35:05,088 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:35:05,088 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 19 letters. Loop has 6 letters. [2018-12-01 12:35:05,088 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:35:05,088 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 97 transitions. [2018-12-01 12:35:05,088 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-01 12:35:05,089 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 68 states and 89 transitions. [2018-12-01 12:35:05,089 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-12-01 12:35:05,089 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-12-01 12:35:05,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 89 transitions. [2018-12-01 12:35:05,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 12:35:05,089 INFO L705 BuchiCegarLoop]: Abstraction has 68 states and 89 transitions. [2018-12-01 12:35:05,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states and 89 transitions. [2018-12-01 12:35:05,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2018-12-01 12:35:05,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-12-01 12:35:05,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2018-12-01 12:35:05,091 INFO L728 BuchiCegarLoop]: Abstraction has 60 states and 80 transitions. [2018-12-01 12:35:05,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 12:35:05,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-01 12:35:05,091 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand 6 states. [2018-12-01 12:35:05,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 12:35:05,105 INFO L93 Difference]: Finished difference Result 149 states and 188 transitions. [2018-12-01 12:35:05,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-01 12:35:05,105 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 149 states and 188 transitions. [2018-12-01 12:35:05,106 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-01 12:35:05,106 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 149 states to 107 states and 137 transitions. [2018-12-01 12:35:05,107 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-12-01 12:35:05,107 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-12-01 12:35:05,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 137 transitions. [2018-12-01 12:35:05,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 12:35:05,107 INFO L705 BuchiCegarLoop]: Abstraction has 107 states and 137 transitions. [2018-12-01 12:35:05,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 137 transitions. [2018-12-01 12:35:05,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 83. [2018-12-01 12:35:05,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-12-01 12:35:05,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 111 transitions. [2018-12-01 12:35:05,111 INFO L728 BuchiCegarLoop]: Abstraction has 83 states and 111 transitions. [2018-12-01 12:35:05,111 INFO L608 BuchiCegarLoop]: Abstraction has 83 states and 111 transitions. [2018-12-01 12:35:05,111 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-12-01 12:35:05,111 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 83 states and 111 transitions. [2018-12-01 12:35:05,112 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-01 12:35:05,112 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 12:35:05,112 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 12:35:05,112 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 3, 2, 2, 2, 2, 1] [2018-12-01 12:35:05,112 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-01 12:35:05,113 INFO L794 eck$LassoCheckResult]: Stem: 1705#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 1706#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1719#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1715#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1716#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1754#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1753#L20-3 main_~x~0 := main_~x~0 - 1; 1752#L19-2 main_~y~0 := main_~y~0 - 1; 1750#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1751#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1742#L19-2 main_~y~0 := main_~y~0 - 1; 1741#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1738#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1735#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1732#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1734#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1724#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1727#L20-3 main_~x~0 := main_~x~0 - 1; 1726#L19-2 main_~y~0 := main_~y~0 - 1; 1725#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1722#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1713#L19-2 [2018-12-01 12:35:05,113 INFO L796 eck$LassoCheckResult]: Loop: 1713#L19-2 main_~y~0 := main_~y~0 - 1; 1707#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1708#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1713#L19-2 [2018-12-01 12:35:05,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:05,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1768639598, now seen corresponding path program 5 times [2018-12-01 12:35:05,113 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:35:05,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:35:05,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:05,113 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 12:35:05,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:05,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:05,121 INFO L82 PathProgramCache]: Analyzing trace with hash 58959, now seen corresponding path program 4 times [2018-12-01 12:35:05,121 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:35:05,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:35:05,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:05,122 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 12:35:05,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:05,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:05,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1116494142, now seen corresponding path program 6 times [2018-12-01 12:35:05,125 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:35:05,125 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:35:05,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:05,126 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 12:35:05,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:35:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:35:05,142 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 12:35:05,142 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 12:35:05,142 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 12:35:05,142 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 12:35:05,142 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 12:35:05,142 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:05,142 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 12:35:05,142 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 12:35:05,142 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration8_Loop [2018-12-01 12:35:05,143 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 12:35:05,143 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 12:35:05,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:05,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:05,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:05,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:05,150 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:05,191 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 12:35:05,191 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:05,193 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:35:05,193 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:35:05,207 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 12:35:05,207 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:05,210 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:35:05,210 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12acc819-d2b9-48ed-8a13-85d1fcda305a/bin-2019/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:05,226 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 12:35:05,226 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:35:05,255 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 12:35:05,257 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 12:35:05,257 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 12:35:05,257 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 12:35:05,257 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 12:35:05,257 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 12:35:05,257 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:35:05,257 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 12:35:05,257 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 12:35:05,257 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration8_Loop [2018-12-01 12:35:05,257 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 12:35:05,257 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 12:35:05,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:05,259 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:05,264 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:05,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:05,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:35:05,287 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 12:35:05,287 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 12:35:05,287 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 12:35:05,288 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 12:35:05,288 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 12:35:05,288 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 12:35:05,288 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 12:35:05,288 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 12:35:05,288 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 12:35:05,290 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 12:35:05,291 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 12:35:05,291 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 12:35:05,291 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 12:35:05,291 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 12:35:05,291 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 12:35:05,291 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 12:35:05,292 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 12:35:05,292 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 12:35:05,293 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 12:35:05,294 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 12:35:05,294 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-01 12:35:05,294 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 12:35:05,294 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 12:35:05,294 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 12:35:05,294 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-12-01 12:35:05,295 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 12:35:05,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:35:05,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:35:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:35:05,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:35:05,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 12:35:05,320 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-01 12:35:05,320 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39 Second operand 4 states. [2018-12-01 12:35:05,330 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39. Second operand 4 states. Result 101 states and 134 transitions. Complement of second has 7 states. [2018-12-01 12:35:05,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-01 12:35:05,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-01 12:35:05,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-12-01 12:35:05,330 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 21 letters. Loop has 3 letters. [2018-12-01 12:35:05,330 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:35:05,330 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-01 12:35:05,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:35:05,341 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:35:05,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:35:05,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:35:05,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 12:35:05,352 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-01 12:35:05,352 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39 Second operand 4 states. [2018-12-01 12:35:05,368 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39. Second operand 4 states. Result 128 states and 166 transitions. Complement of second has 9 states. [2018-12-01 12:35:05,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-12-01 12:35:05,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-01 12:35:05,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2018-12-01 12:35:05,369 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 21 letters. Loop has 3 letters. [2018-12-01 12:35:05,369 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:35:05,369 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-01 12:35:05,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:35:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:35:05,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:35:05,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:35:05,390 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:35:05,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 12:35:05,400 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-01 12:35:05,400 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39 Second operand 4 states. [2018-12-01 12:35:05,416 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39. Second operand 4 states. Result 139 states and 187 transitions. Complement of second has 8 states. [2018-12-01 12:35:05,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-01 12:35:05,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-01 12:35:05,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2018-12-01 12:35:05,417 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 21 letters. Loop has 3 letters. [2018-12-01 12:35:05,417 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:35:05,417 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 24 letters. Loop has 3 letters. [2018-12-01 12:35:05,417 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:35:05,418 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 21 letters. Loop has 6 letters. [2018-12-01 12:35:05,418 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:35:05,418 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 139 states and 187 transitions. [2018-12-01 12:35:05,419 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-01 12:35:05,419 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 139 states to 0 states and 0 transitions. [2018-12-01 12:35:05,419 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-01 12:35:05,419 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-01 12:35:05,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-01 12:35:05,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-01 12:35:05,419 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 12:35:05,420 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 12:35:05,420 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 12:35:05,420 INFO L442 BuchiCegarLoop]: ======== Iteration 9============ [2018-12-01 12:35:05,420 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-01 12:35:05,420 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-01 12:35:05,420 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-01 12:35:05,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.12 12:35:05 BoogieIcfgContainer [2018-12-01 12:35:05,426 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-01 12:35:05,426 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 12:35:05,426 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 12:35:05,426 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 12:35:05,426 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 12:35:02" (3/4) ... [2018-12-01 12:35:05,429 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-01 12:35:05,430 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 12:35:05,430 INFO L168 Benchmark]: Toolchain (without parser) took 3139.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.6 MB). Free memory was 954.4 MB in the beginning and 1.1 GB in the end (delta: -142.0 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2018-12-01 12:35:05,431 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 12:35:05,431 INFO L168 Benchmark]: CACSL2BoogieTranslator took 114.21 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-01 12:35:05,432 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.92 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 12:35:05,432 INFO L168 Benchmark]: Boogie Preprocessor took 10.72 ms. Allocated memory is still 1.0 GB. Free memory was 943.6 MB in the beginning and 941.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-01 12:35:05,432 INFO L168 Benchmark]: RCFGBuilder took 143.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -151.2 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-12-01 12:35:05,433 INFO L168 Benchmark]: BuchiAutomizer took 2846.96 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 61.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -4.2 MB). Peak memory consumption was 57.1 MB. Max. memory is 11.5 GB. [2018-12-01 12:35:05,433 INFO L168 Benchmark]: Witness Printer took 3.75 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 12:35:05,435 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 114.21 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.92 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.72 ms. Allocated memory is still 1.0 GB. Free memory was 943.6 MB in the beginning and 941.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 143.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -151.2 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2846.96 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 61.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -4.2 MB). Peak memory consumption was 57.1 MB. Max. memory is 11.5 GB. * Witness Printer took 3.75 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 11 terminating modules (3 trivial, 6 deterministic, 2 nondeterministic). One deterministic module has affine ranking function 2 * y + 1 and consists of 5 locations. One deterministic module has affine ranking function 2 * m + -2 * y + 1 and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. One nondeterministic module has affine ranking function 2 * m + -2 * y + 1 and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.8s and 9 iterations. TraceHistogramMax:5. Analysis of lassos took 2.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 10. Automata minimization 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 71 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 83 states and ocurred in iteration 7. Nontrivial modules had stage [5, 1, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 137 SDtfs, 155 SDslu, 81 SDs, 0 SdLazy, 157 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT2 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax168 hnf99 lsp37 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq159 hnf94 smp100 dnf112 smp100 tf111 neg100 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 9ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 13 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 8 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...